Mauna Kea are nearly 14,000 feet high, as high as Mount Grey in Colorado; and you can not ride anywhere in the islands without seeing extinct craters, of which the hill called Diamond Head, near Honolulu, is an example.

There are a handful of things that are good tourist attractions on Oahu some of which we had already done like Pearl Harbour, north shore, surfing and there is Diamond Head which is hike up to a view point where you can see Waikiki in all its glory.

Exhibits at Home Of Metal include Lars Ulrich's polite missive to Brian Tatler of Diamond Head thanking the band for looking after him when he arrived in England as an unknown fan – Ulrich promptly returned to LA and formed Metallica with James Hetfield.